Extech Instruments Extech 475055 User manual

User Manual

Models 475055

Digital Force Gauge

Additional User Manual Translations available at www.extech.com

2 475055-en-GB_v2.8 9/19

Introduction

Congratulations on your purchase of Extech’s Model 475055 Digital Force Gauge that measures

Tension or Compression (pull/push) to 220 lbs. It features: Peak hold, fast/slow response time,

positive or reverse display direction, and a separate sensor. An RS-232 PC interface provides data

acquisition functionality. This meter is shipped fully tested and calibrated and with proper use will

provide years of reliable service.

Meter Description

1. Sensor socket

2. LCD display

3. Keypad

4. Kg/N/lb switch

5. Off/On/Peak switch

6. Sensor plug

7. Sensor loop

8. S-type load sensor

9. Sensor hook

3 475055-en-GB_v2.8 9/19

Operation

Preparation for Measurement

1. The 475055 automatically determines Tension or Compression (pull/push) force during use.

Compression displays as a negative value and Tension displays as a positive value.

2. Select units of measure (kilograms, pounds, or Newtons) via the units select switch.

3. Screw in the sensor hook and loop on the load sensor and then connect the sensor to the

meter via the input jack on top of the meter.

4. Select FAST (0.2 seconds) or SLOW (0.6 seconds) update rate.

5. Zero the display before each measurement via the Zero button.

Note: The sensing head with adapter must be in line with the object being measured. Avoid

rotating the sensing head. Refer to the Figure 1.

Figure 1 ─ Correct and Incorrect Angles of Measurement

Measurement Mode

1. Slide the POWER switch to the ON (I)position. Reverse the LCD display if desired via the

Display Reverse key.

2. Zero the meter before each measurement.

3. Touch the adapter to the object being measured in a straight line. Refer to Fig.1.

4. Begin measurement by applying force (Push or Pull). Read the LCD display.

5. After completing the measurement, the display will indicate "0.00" if the position and angle of

the Force Gauge have not changed.

Note: Be sure to press "ZERO" before taking a new measurement.

Remove the sensor hook/loop from the “S” load cell for a PUSH or compression measurement.

Over Range Indication

The Model 475055 uses a strain gauge sensor to measure force. Avoid subjecting the instrument to

forces outside the specified measurement range. The sensitive strain gauge can be damaged or

otherwise compromised by misuse. When an over-range condition is sensed by the meter the LCD

displays all dashes.

Note that the dashes are shown at the top of the LCD (

--------

) for tension measurements and at the

bottom of the display (

--------

) for compression measurements.

4 475055-en-GB_v2.8 9/19

Peak Load Measurement

1. Slide the POWER switch to the PEAK position.

2. Touch the adapter to the object being measured in a straight line, refer to Fig. 1.

3. Zero the meter before each measurement.

4. Begin measurement by applying force (pull or push). The LCD will display the peak value,

which is the highest reading encountered.

5. After completing the measurement, the display will hold the peak reading until a higher

reading is reached or the switch is moved out of the peak hold position.

Note: Be sure to press "ZERO" before taking a new measurement.

Remove the sensor hook/loop from the “S” load cell for a PUSH or compression measurement.

Fast/Slow selection

Press the FAST/SLOW key to select the desired display update rate. The “FAST” icon will appear in

the display when FAST is selected.

Display Backlight

Pressing the backlight button momentarily will turn on the backlight. After approximately 15

seconds, it will automatically shut off.

PC Interface

PC interface port

Contact Extech for a copy of the 407001-Pro Software for streaming of data from the meter to the PC

via the RS232 port. ([email protected]m).

Maintenance

Battery Replacement

The low battery indication appears as a "LO" on the display when battery voltage is less than 6.8V.

To replace the battery:

1. Remove the two screws from the battery compartment cover.

2. Lift off the battery cover.

3. Replace with six (6) 1.5V ‘AA’ batteries.

4. Replace compartment cover and screws.

5 475055-en-GB_v2.8 9/19

Specifications

Range

220 lbs, 100kg, 980 Newtons

Accuracy (23

o

C)

±(0.5%rdg + 0.1lbs, 0.1kg or 0.4N)

Resolution

0.05lbs, 0.05kg, 0.2 Newtons

Overload Capacity

150kg

Circuit

Custom LSI microprocessor

Zero adjust

Button for Peak Hold and normal display zero

Display

5-digit LCD type; Digit height: 0.63” (16 mm)

Update Rate

Fast mode 0.2 seconds; Slow mode 0.6 seconds

Over range Indicators

LCD displays “

--------

“for tension measurements and “

--------

“for

compression measurements

Zero / Tare Control

Up to Maximum capacity

Full Scale Deflection

<1mm

Transducer type

S-type load cell with 2 hooks (thread size: M10 x 1.5mm ISO) and

6.5 ft (2m) cable

Peak Hold

Freezes Max reading on display

Data Output

RS-232 serial interface with 16-bit data stream output

Operating Temperature

0°C to 50°C (32 °F to 122 °F)

Operating RH

Max. 80% Relative Humidity (RH)

Power Supply

6 x 1.5V ‘AA’ batteries or 9VDC adapter (not included)

Power consumption

12mA (approx.)

Weight

Meter: 450g (1 lb); 278g (0.61 lbs) w/out batteries

Sensor: 635g (1.40 lbs)

Dimensions

Meter: 215 x 90 x 45 mm (8.5 x 3.5 x 1.8”)

Sensor with 2 hooks: 162 x 51 x 22 mm (6.4 x 2.0 x 0.9”)

Cable length: 2m (6.5 ft.)

www.extech.com

Extech Instruments Extech 475055 User manual

This manual is also suitable for

Extech Instruments Extech 475055 User manual

Related papers

Other documents